Open brichwin opened 2 months ago
You can type _n C_k
I recreated the word doc using MacOS and the instructions above, and found the same results.
The same issue appeared for MacOS users. I tried the above steps by @MurrayIII and that did remove the box. Additionally, I was able to insert a
Tested this with on Windows 11, using Word 365 and was able to recreate this issue. This issue is verified.
eDAD tracking ticket for this issue is Accessibility 228595
Description:
“Subscript n Baseline upper C Subscript k” (or
It could not be determined how to enter this notation using a keyboard via Linear Mode (Unicode or LaTeX) nor via the commands in the Structures group on the Equations tab. All attempts made result in an empty placeholder rectangle being present in the expression. For example:
![A series of attempts to create [begin math] Subscript n Baseline upper C Subscript k [end math] in Word. Each attempt includes a rectangle with a dotted outline. The rectangle is a placeholder where a superscript or subscript's content goes. Which do not disappear once in Professional mode and not being rendered.](https://github.com/daisy/math-a11y/assets/117550/772a9b1c-319d-4380-8001-082486f25d94)
\[_nC_k\]
in LaTeX), is a very common notation used to indicate the number of ways to chose m elements from a set of n elements without regard to the order of selection. The LaTeX for this expression would typically render something like shown in this image:Why this Issue Is Important
Faculty can be quite particular and may reject using MS Word's Equation Editor for creating mathematics if it is not easy to create a math expression in the visual rendering they want. For example, they may wish to show the typical definition that includes several forms of the notation as having students learn the various forms is important:
Which in LaTeX is:
Steps to Reproduce:
Unicode Linear Mode
_a^b<space>x<space>
We interpreted that to mean we needed to try
_n<space>C_m<space>
:_n<space>C_m<space>
^
code on the left._(n)<space>C_m<space>
,_(n)^()<space>C_m<space>
,_n^<space>C_m<space>
Unicode LaTeX Mode
_nC_m
and then convert to Professional mode.Commands in the Structures Group of the Equations Tab
By Pasting in MathML of the Desired Expression
or
Expected Behavior:
Empty placeholders should disappear visually and semantically (if appropriate) when built-up into Professional expressions. Note that it may be important to note empty multi-script positions semantically (in Tensor notation perhaps).
Observed Behavior:
Empty placeholders remain both visually and semantically when built-up into Professional expressions.
Version Information:
Sample Document:
I have attached a sample file where series of series of attempts were made to create the desired expression but resulted in unwanted empty placeholders.
Attachment:
Various Failed Attempts to Create Subscript n Baseline upper C Subscript k.docx